APPLICATION OF BIOLOGICAL FEEDBACK FOR ESTIMATION OF ANAEROBIC PERFORMANCE IN JUMPING TEST Kovalenko S.O., Nechyporenko D.L. Cherkasy National University Annotation. Purpose:-To determine the effect of biofeedback to determine the level of anaerobic performance of healthy young men. Material: The ch

Annotation. Purpose: To determine the effect of biofeedback to determine the level of anaerobic performance of healthy young men. Material: The characteristics of physical performance in 60-seconds jumping test without and with visual and audible biofeedback (BFB) are determined at 23 healthy young men. Results: Significant individual peculiarities are found in performance features of 60-seconds jumping test both without and with BFB. The groups of performance indexes are maximum jumping height; jumping frequency and achieved performance level; correlation of jumping phases and achieved capacity of a separate jump; jumping dynamics during the test. The positive effect mostly on performance in BFB regime is found in the group of persons with low level of physical performance. Conclusion: The application of BFB in 60-seconds jumping test is proved to increase the objective character of measuring anaerobic performance.

1. Chaotic character or stability of indicators of one tested person during whole test.2. Dynamic of changes of different indicators from the beginning to the end of the test.3. Frequency of jumps, correlation of supported-un supported phases of compared persons significantly differ.That is why we analyzed specific features of distribution of physical workability's characteristics in sample of 23 healthy young men both with their determination in ordinary mode and in feedback mode (see table 1).For example minimal scatter of maximal jump height was in ordinary mode (сV = 7.20%), and in feedback mode (сV = 7,20%).Frequency of jumps and power of test fulfillment had a little bit higher inter-individual variability 12,85-22,13%).The highest distinctions belonged to correlation of jump phases and achieved power in separate jumps (41,80-47,01%).Thus, there are substantial inter-individual distinctions in characteristics of physical workability, achieved in 60 seconds' jump test, which are the base for system of automatic evaluation.By scatters all these indicators can be divided in three groups: maximal height of jump; frequency of jumps and achieved level of workability; correlation of jump phases and achieved power of every separate jump.
During test all analyzed indicators had both positive and negative dynamic.To the largest extent, height of maximal jump reduced by the end of test.The trend to reducing of jump power was also rather expressive.Thus, indicators of workability's dynamic during test also can be used in automatic system of its evaluation.
The measurements were carried out with registration of indicators of anaerobic workability of 23 healthy young men in compliance with standard protocol by Bosco C. e.a.(I) and with BF (II) (see table 2).
So, in 60 seconds' test in conditions of biological feedback frequency of jumps, power of work confidently increase as well as correlation of flight and supported phases and power of pushing off.It permits to make conclusion about higher mobilization of the tested during testing and detecting of actual anaerobic workability in BF mode.The height of maximal jump in I and II did not differ.Frequency of jumps both in I and II was increasing during test and its dynamic in both modes did not differ.In period from 25 to 35 seconds from the beginning of test and further dynamic of change of power of work, of power during jump was less in BF mode and this reduction was not so significant as with standard protocol.So, changes of anaerobic workability in BF mode permit to maintain relatively uniform level during the whole test, mainly in period from 25 second after beginning and further.

PHYSICAL EDUCATION OF STUDENTS
We compared indicators of anaerobic workability of persons with relatively low level of it (less than 36 m/min -1 , N = 12) and relatively high level (more than 36 m.min -1 , N = 11, from them 7 -were sportsmen of high class).The persons of first group improved workability in BF mode, while in the second group increment was not confident.For example, power in first group was accordingly 28.58±0.90m.min -1 and 34.60±1.98m.min -1 (р <0.001), and in second group 41.95±1.30m/min -1 and 43.97±1.21m/min -1 (р> 0.05).
Dynamic of change of workability during test also depended on achieved its level (see fig. 1).Only persons with relatively low workability in period from 25 to 35 seconds had lower lever of its reduction in BF mode than in mode I.

Conclusions:
1. Healthy young men have substantial individual features in characteristics of fulfillment of 60 seconds' jump test in BF mode and in ordinary mode.
2. We can mark out the following groups of characteristics: maximal height of jump; frequency of jumps and achieved level of workability; correlation of jump's phases and achieved power of every separate jump.The prospects of further researches imply their fulfillment with different contingents of persons, practicing physical culture and sports.

3 .
Dynamic of changes of physical workability during 60 seconds' jump test also has substantial individual peculiarities that permit to include these indicators in system of evaluation of human functional state.4.In mode of biological feedback, its positive influence is the most expressive in group of persons with relatively low level of physical workability.5.Application of biological feedback in jump tests can be recommended for optimization of training of human anaerobic potentials.

Table 1
Distribution of physical workability's characteristics, determined in 60 seconds' jump test of healthy young men

Table 2
Indicators of physical workability in 60 seconds' test with and without (I)and with biological feedback (II) (n = 23)